US7673429B2 - Suspended ceiling grid network utilizing seismic separation joint clips - Google Patents
Suspended ceiling grid network utilizing seismic separation joint clips Download PDFInfo
- Publication number
- US7673429B2 US7673429B2 US10/592,614 US59261405A US7673429B2 US 7673429 B2 US7673429 B2 US 7673429B2 US 59261405 A US59261405 A US 59261405A US 7673429 B2 US7673429 B2 US 7673429B2
- Authority
- US
- United States
- Prior art keywords
- grid
- main
- ceiling
- clip
- primary
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active, expires
Links
- 280000398338 Seismic companies 0.000 title description 19
- 238000000926 separation method Methods 0.000 title description 3
- 239000000789 fasteners Substances 0.000 description 20
- 230000000694 effects Effects 0.000 description 4
- 239000000463 materials Substances 0.000 description 3
- 239000000725 suspensions Substances 0.000 description 3
- 239000000969 carriers Substances 0.000 description 2
- 238000002788 crimping Methods 0.000 description 2
- 229910000639 Spring steel Inorganic materials 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000001419 dependent Effects 0.000 description 1
- 238000006073 displacement reactions Methods 0.000 description 1
- 230000004301 light adaptation Effects 0.000 description 1
- 238000007567 mass-production techniques Methods 0.000 description 1
- 239000002184 metals Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000006011 modification reactions Methods 0.000 description 1
- 238000005192 partition Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
Images
Classifications
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B9/00—Ceilings; Construction of ceilings, e.g. false ceilings; Ceiling construction with regard to insulation
- E04B9/06—Ceilings; Construction of ceilings, e.g. false ceilings; Ceiling construction with regard to insulation characterised by constructional features of the supporting construction, e.g. cross section or material of framework members
- E04B9/12—Connections between non-parallel members of the supporting construction
- E04B9/127—Connections between non-parallel members of the supporting construction one member being discontinuous and abutting against the other member
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04H—BUILDINGS OR LIKE STRUCTURES FOR PARTICULAR PURPOSES; SWIMMING OR SPLASH BATHS OR POOLS; MASTS; FENCING; TENTS OR CANOPIES, IN GENERAL
- E04H9/00—Buildings, or groups of buildings, or shelters adapted to withstand or provide protection against abnormal external influences, e.g. war-like action, earthquake, extreme climate
- E04H9/02—Buildings, or groups of buildings, or shelters adapted to withstand or provide protection against abnormal external influences, e.g. war-like action, earthquake, extreme climate withstanding earthquake or sinking of ground
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS, WEDGES, JOINTS OR JOINTING
- F16B7/00—Connections of rods or tubes, e.g. of non-circular section, mutually, including resilient connections
- F16B7/04—Clamping or clipping connections
- F16B7/044—Clamping or clipping connections for rods or tubes being in angled relationship
- F16B7/048—Clamping or clipping connections for rods or tubes being in angled relationship for rods or for tubes without using the innerside thereof
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T403/00—Joints and connections
- Y10T403/39—Rod to member to side, e.g., plate, rod side, etc.
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T403/00—Joints and connections
- Y10T403/46—Rod end to transverse side of member
Abstract
Description
This application claims the benefit under 35 U.S.C. §119(e) of U.S. provisional application Ser. No. 60/536,427, filed Jan. 14, 2004, entitled “Suspended Ceiling System Utilizing Seismic Separation Joint Clips”.
The invention relates to a suspended ceiling grid network which utilizes clips to connect a primary grid member to a secondary or cross grid member in generally perpendicular relationship. More specifically, the invention relates to a grid network having a clip which permits lateral movement of the cross grid member relative the primary grid member in at least two horizontal directions with respect to the ceiling plane, while maintaining the assembled relationship of the primary and cross grid members.
Clips for securing two grid members in generally perpendicular relation to one another in order to form a ceiling grid network are widely known in the art. In geographical regions subject to earthquakes, steel buildings are designed with lateral force resisting (seismic) systems to resist the effects of earthquake forces. Seismic systems make a building stiffer against horizontal forces, thus minimizing the amount of relative lateral movement and resultant damage. Although the buildings may be designed structurally to provide seismic resistance to lateral forces, suspension ceiling systems remain very susceptible to displacement under seismic conditions.
ASTM E 580-02 provides a standard practice for “Application of Ceiling Suspension Systems for Acoustical Tile and Lay-in Panels in Areas Requiring Seismic Restraint.” This standard practice covers acoustical ceiling suspension systems and their additional requirement for application both in areas subject to light to moderate seismic disturbance such as Uniform Building Code (UBC) Seismic Zone 2, and areas subject to moderate to severe seismic disturbance such as UBC Seismic Zones 3 and 4. The intent of this standard practice is to provide an unrestrained ceiling system designed to accommodate the horizontal movement of the grid network when loads are applied laterally to a ceiling surface, such as during a seismic event. ASTM E 580-02 requires, in areas subject to light to moderate seismic disturbance, that the primary and cross grid members of the ceiling system, including their splices, connectors and expansion devices be designed and built to carry an average test load of 60 lbs. in tension with a 5 degree misalignment of the primary and cross grid members in any direction.
Typically, a ceiling system having a ceiling area of less than 2500 square feet, is attached to the wall via wall angles on two adjacent sides. On the other two sides, wall angles with 2 inch horizontal legs are used along with spacer bars and hanger wires. Thus, during a seismic event, the grid members abutting the wall can move laterally away from the wall, i.e. float on the 2 inch perimeter wall angle. The 2 inch wall angles provide the 5 degree misalignment of the primary and cross runners in the direction of the horizontal ceiling plane as required by ASTM E 580-02.
In order to comply with ASTM E 580-02 at an interior ceiling location, one solution that has been contemplated by those skilled in the art is to utilize primary and cross grid members having four inch horizontal flanges, in other words, two inch flanges on either side of the vertical web. This solution effectively provides the same effect as the 2 inch wall angles at an interior ceiling location. However, from an aesthetic standpoint, it is undesirable to use grid members having such wide flanges.
Additionally, the 2000 International Building Code specifies that “for ceiling areas exceeding 2,500 square feet a seismic separation joint or full height partition shall be provided.” Essentially, this requires a large ceiling area to be segmented into independent smaller areas to prevent the ceiling from completely collapsing during a seismic event.
In order to comply with both ASTM E 580-02 and the 2000 International Building Code, a grid network is needed which eliminates for primary grid members having 4 inch lower flanges and which partitions a single ceiling area into smaller independent ceiling areas.
The present invention is a ceiling system having a primary grid network which has a plurality of grid members disposed in generally perpendicular relation forming a plurality of intersection points. The primary grid network is partitioned into more than one grid network by attaching the joint clip of the invention at points of intersection of the grid members.
Each clip, which can be formed from a single piece of resilient sheet metal, secures first and second cross grid members to the primary grid member. The clip has a first resilient fastening portion extends in the longitudinal direction of the primary grid member and attaches to the primary grid member. The clip also has a second resilient fastening portion which extends from the first fastening portion at a right angle. The clip further includes a third resilient fastening portion which extends from the first fastening portion at a right angle on the side of the first fastening portion opposite the second fastening portion.
The joint clip of the invention partitions the primary grid network into smaller networks, or islands. Each smaller grid network is capable of moving independently of neighboring grid networks, while at the same time, preserving the aesthetic appeal of the overall grid network. The clip adds structural strength to the overall grid framework to prevent twisting and withdrawal of the cross grid members from the primary grid member.
The following description of the invention is provided as an enabling teaching of the invention in its best, currently known embodiment. Those skilled in the relevant art will recognize that many changes can be made to the embodiments described while still obtaining the beneficial results of the present invention. It will also be apparent that some of the desired benefits of the present invention can be obtained by selecting some of the features of the present invention without utilizing other features. Accordingly, those who work in the art will recognize that many modifications and adaptations to the present invention are possible and may even be desirable in certain circumstances and are a part of the present invention. Thus, the following description is provided as illustrative of the principles of the present invention and not in limitation thereof, since the scope of the present invention is defined by the claims.
The ceiling grid network of the invention includes a plurality of primary and cross grid members. The grid members shown throughout the drawings are of a generally inverted T-cross section, which are well known in the art. However, it should be noted that other grid members could be used in the grid network of the invention. The primary and cross grid members are typically spaced in perpendicular relation to accommodate ceiling panels and other suspended ceiling equipment, such as light fixtures. The grid network formed can be suspended from a stationary fixed ceiling.
Referring now to
A joint clip 20 is attached to the grid network at an intersecting point of the primary 10 and cross grid members 12. In the example embodiment shown in
A first resilient fastener portion 22 of clip 20 is attached to a primary grid member 10. As best seen in
When inserted into channel 36, the primary grid member 10 is slidably secured therein by the crimping of the resilient opposing leg portions 32,34 about the vertical web 14 of the primary grid member. The clip 20 is prevented from moving upwardly away from assembled relation by the engagement of the leg portions 32,34 with the underside of the bulb 16 of the primary grid member 10. The apex of the inverted-V channel 37 should be sufficiently tight to provide support for the underside of the bulb 16 of the vertical web 14.
Each leg portion 32, 34 may include one or more inwardly detents 38 stamped inwardly in a direction toward the opposing leg. The detents 38 further assist in engaging the vertical web 16 of the primary grid member 10 in a generally snug, gripping relationship in channel 36, thereby further resisting longitudinal movement of the primary grid member 10 in channel 36. However, during seismic activity, the primary grid member is able to move within channel 36 in a direction shown by Arrow L despite this resistance.
Each clip 20 further includes second and third resilient fastener portions, 24 and 25 respectively, also referred to as “cross grid member supports”, extending from, and integrally connected to, the first resilient fastener portion 22 in generally perpendicular relation. The second resilient fastener portion 24 effectively attaches a first cross grid member 12 to the primary grid member 10. Likewise, the third resilient fastener 25 portion effectively attaches a second cross grid member 12 to the primary grid member 10.
Each resilient fastener 24, 25 has two opposing clip webs 40, 42 which generally follow the geometry of the web 14 (and bulb 16) of a secondary grid member 12. In this embodiment, the top of each cross tee support is open forming a channel 44 having generally a Y-shaped cross section.
In a conventional configuration, a cross grid member 12 it typically supported by a lower horizontal flange 18 of the primary grid member 10. Here, support for the cross grid member 12 by the primary grid member is not required as the clip webs are contoured to the underside of the bulb 16 of the secondary grid member 12. Thus, resilient fastener 24 alone can support the secondary grid member 12. This is particularly important during a seismic disturbance when cross grid member 12 is displaced in the directions shown by arrow M in
Each clip web 40, 42 may also include one or more detents 38 stamped inwardly in a direction toward the opposing leg. The detents 38 assist in engaging the vertical web 16 of the secondary grid member 12 in a generally snug, gripping relationship, to resist any withdrawal movement of the secondary grid member 12 from fastener portions 24 and 25. Despite this resistance, during seismic activity, the secondary grid member 12 is able to move in channel 44 in the directions indicated by Arrow M.
Since the direction of the motion of the independent ceiling areas during an earthquake is unpredictable it may be possible that two ceiling areas, and therefore their respective cross beams, on either side of a separating primary grid member move in opposite directions lengthwise along the primary grid member, i.e. in opposite directions of the horizontal directions indicated by Arrows P and X in
The example embodiment of the joint clip shown in
In this configuration, each opposing leg 32,34 of the first fastener portion 22 has a clip carrier 52 which is defined by a carrying slot 54 stamped in the leg of the first fastener portion 22. The second and third fastener portions 24, 25 of the first embodiment are modified to include a face plate 56. The face plate 56 integrally extends from the top of the clip webs 40,42 in a downward direction but is spaced from the side edge of the clip webs. The face plate 56 contains one or more downwardly extending planar tabs 58 stamped out of the face plate 56 with the top of the tabs 58 integrally attached to the face plate 56. The tabs 58 engage carrying slot 54 bf the first fastener portion 22. When engaged, the second or third fastener portion 24,25, and, thus, a cross grid support member 12 attached thereto, can slide along the clip carrier or track 52 in carrying slot 54, in the directions indicated by Arrows P and X in
Claims (2)
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US53672704P true | 2004-01-16 | 2004-01-16 | |
PCT/US2005/001487 WO2005076792A2 (en) | 2004-01-14 | 2005-01-14 | Suspended ceiling grid network utilizing seismic separation joint clips |
US10/592,614 US7673429B2 (en) | 2004-01-16 | 2005-01-14 | Suspended ceiling grid network utilizing seismic separation joint clips |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US10/592,614 US7673429B2 (en) | 2004-01-16 | 2005-01-14 | Suspended ceiling grid network utilizing seismic separation joint clips |
Publications (2)
Publication Number | Publication Date |
---|---|
US20070180787A1 US20070180787A1 (en) | 2007-08-09 |
US7673429B2 true US7673429B2 (en) | 2010-03-09 |
Family
ID=38332582
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US10/592,614 Active 2026-11-21 US7673429B2 (en) | 2004-01-14 | 2005-01-14 | Suspended ceiling grid network utilizing seismic separation joint clips |
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Cited By (15)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20090223146A1 (en) * | 2008-03-06 | 2009-09-10 | Worthington Armstrong Venture | Seismic main beam connection |
US20110146194A1 (en) * | 2009-12-22 | 2011-06-23 | Usg Interiors, Inc. | Seismic clip |
US20110219718A1 (en) * | 2010-03-11 | 2011-09-15 | Martin Daniel Gerkes | Suspended ceiling grid system |
US20120102865A1 (en) * | 2010-11-01 | 2012-05-03 | Armstrong World Industries, Inc. | Suspended ceiling system, securing members, and process of installing a suspended ceiling system |
US20130042560A1 (en) * | 2011-08-16 | 2013-02-21 | Worthington Armstrong Venture | Noise damper |
US8474200B2 (en) * | 2010-03-11 | 2013-07-02 | Decoustics Limited | Suspended ceiling grid system |
US20130327773A1 (en) * | 2012-06-06 | 2013-12-12 | David Jon Rosenkrantz | Internal Floating Roof for Covering Fluid Bodies in Storage Tanks |
US8813457B2 (en) * | 2012-06-29 | 2014-08-26 | Usg Interiors, Llc | Grid runner to perimeter trim clip |
US8839583B2 (en) | 2012-09-08 | 2014-09-23 | Worthington Armstrong Venture | Suspended ceiling grid adapter |
WO2015053639A1 (en) * | 2013-10-11 | 2015-04-16 | Evans Shaun | Bracket assembly and method |
US9151050B2 (en) | 2012-01-04 | 2015-10-06 | John Santeramo | Splice plate |
USD769706S1 (en) | 2013-05-28 | 2016-10-25 | Rockwool International A/S | Seismic separation clip for suspended ceiling grid systems |
US9482001B2 (en) | 2012-09-08 | 2016-11-01 | Worthington Armstrong Venture | Suspended ceiling grid adapter |
US20170362828A1 (en) * | 2016-06-20 | 2017-12-21 | Certainteed Ceilings Corporation | System and apparatus for a yoke structure in a ceiling suspension |
US10036163B1 (en) * | 2017-07-31 | 2018-07-31 | Usg Interiors, Llc | Seismic perimeter attachment clip |
Families Citing this family (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CA2518294C (en) | 2004-09-07 | 2009-06-23 | Chicago Metallic Corporation | Seismic perimeter clip for suspended ceiling grid |
US7730690B2 (en) * | 2006-12-27 | 2010-06-08 | Usg Interiors, Inc. | Compression post assembly for wind up-lift of suspension soffits |
US7677004B2 (en) * | 2007-11-29 | 2010-03-16 | Usg Interiors, Inc. | Conformable wide wall angle |
US8117793B2 (en) | 2007-12-28 | 2012-02-21 | Chicago Metallic Corporation | Suspended ceiling grid assembly with separation joints |
US7770349B2 (en) * | 2008-07-14 | 2010-08-10 | Usg Interiors, Inc. | Seismic clip for grid tee control joint |
EP3122952A4 (en) * | 2014-03-25 | 2018-05-16 | Rockwool International A/S | Ceiling suspension system |
US9187896B1 (en) * | 2014-11-26 | 2015-11-17 | Awi Licensing Company | Assembly for supporting ceiling panels and ceiling system incorporating the same |
Citations (15)
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US2710679A (en) * | 1950-10-24 | 1955-06-14 | John T Bibb | Suspended ceiling construction |
US2981386A (en) * | 1955-09-08 | 1961-04-25 | Fed Lighting Corp | Illumination system |
US2990921A (en) * | 1957-06-18 | 1961-07-04 | William V Wilde | Suspended ceiling grid construction |
US3089570A (en) * | 1959-07-21 | 1963-05-14 | Jr Timothy H O'neil | Beam and tie support |
US3216537A (en) * | 1961-05-19 | 1965-11-09 | United States Gypsum Co | Clip member for suspended ceiling construction |
US3253082A (en) * | 1964-08-28 | 1966-05-24 | Nova Ind Inc | Electrical shielding structure |
US3329387A (en) * | 1965-06-25 | 1967-07-04 | Harry G Fischer | Support assembly for fixtures or the like |
US4479341A (en) * | 1982-04-02 | 1984-10-30 | Fastway Fasteners, Inc. | Clips for T-bar grid ceiling arrangement |
US4580387A (en) * | 1984-12-12 | 1986-04-08 | Crystaplex Plastics, Ltd. | Corrosive resistant grid construction for a suspended ceiling |
US4583340A (en) * | 1984-05-03 | 1986-04-22 | Donn Incorporated | Fixture support clip for suspension ceiling grid systems |
US5279090A (en) * | 1991-03-18 | 1994-01-18 | Asahi Kogyosha Co., Ltd. | Ceiling-frame construction method and ceiling-frame structure for clean rooms |
US5349800A (en) * | 1993-04-19 | 1994-09-27 | Peng Sen Ming | Ceiling frame joint structure |
US5609007A (en) * | 1995-02-06 | 1997-03-11 | Eichner; Vincent T. | Integrated refacing system for suspended ceilings |
US6029414A (en) * | 1997-11-19 | 2000-02-29 | Macleod; Frank A. | Seismic fixture clamp |
US20050086888A1 (en) * | 2003-10-24 | 2005-04-28 | Moore Mahlon L. | Suspended ceiling assembly |
-
2005
- 2005-01-14 US US10/592,614 patent/US7673429B2/en active Active
Patent Citations (15)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2710679A (en) * | 1950-10-24 | 1955-06-14 | John T Bibb | Suspended ceiling construction |
US2981386A (en) * | 1955-09-08 | 1961-04-25 | Fed Lighting Corp | Illumination system |
US2990921A (en) * | 1957-06-18 | 1961-07-04 | William V Wilde | Suspended ceiling grid construction |
US3089570A (en) * | 1959-07-21 | 1963-05-14 | Jr Timothy H O'neil | Beam and tie support |
US3216537A (en) * | 1961-05-19 | 1965-11-09 | United States Gypsum Co | Clip member for suspended ceiling construction |
US3253082A (en) * | 1964-08-28 | 1966-05-24 | Nova Ind Inc | Electrical shielding structure |
US3329387A (en) * | 1965-06-25 | 1967-07-04 | Harry G Fischer | Support assembly for fixtures or the like |
US4479341A (en) * | 1982-04-02 | 1984-10-30 | Fastway Fasteners, Inc. | Clips for T-bar grid ceiling arrangement |
US4583340A (en) * | 1984-05-03 | 1986-04-22 | Donn Incorporated | Fixture support clip for suspension ceiling grid systems |
US4580387A (en) * | 1984-12-12 | 1986-04-08 | Crystaplex Plastics, Ltd. | Corrosive resistant grid construction for a suspended ceiling |
US5279090A (en) * | 1991-03-18 | 1994-01-18 | Asahi Kogyosha Co., Ltd. | Ceiling-frame construction method and ceiling-frame structure for clean rooms |
US5349800A (en) * | 1993-04-19 | 1994-09-27 | Peng Sen Ming | Ceiling frame joint structure |
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Cited By (24)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20090223146A1 (en) * | 2008-03-06 | 2009-09-10 | Worthington Armstrong Venture | Seismic main beam connection |
US7788872B2 (en) * | 2008-03-06 | 2010-09-07 | Worthington Armstrong Venture | Seismic main beam connection |
US20110146194A1 (en) * | 2009-12-22 | 2011-06-23 | Usg Interiors, Inc. | Seismic clip |
US8453407B2 (en) * | 2009-12-22 | 2013-06-04 | Usg Interiors, Llc | Seismic clip |
US20110219718A1 (en) * | 2010-03-11 | 2011-09-15 | Martin Daniel Gerkes | Suspended ceiling grid system |
US8079192B2 (en) * | 2010-03-11 | 2011-12-20 | Decoustics Limited | Suspended ceiling grid system |
US8474200B2 (en) * | 2010-03-11 | 2013-07-02 | Decoustics Limited | Suspended ceiling grid system |
US20120102865A1 (en) * | 2010-11-01 | 2012-05-03 | Armstrong World Industries, Inc. | Suspended ceiling system, securing members, and process of installing a suspended ceiling system |
US8596009B2 (en) * | 2010-11-01 | 2013-12-03 | Awi Licensing Company | Suspended ceiling system, securing members, and process of installing a suspended ceiling system |
US10718113B2 (en) * | 2010-11-01 | 2020-07-21 | Awi Licensing Llc | Suspended ceiling system, securing members, and process of installing a suspended ceiling system |
US20130042560A1 (en) * | 2011-08-16 | 2013-02-21 | Worthington Armstrong Venture | Noise damper |
US9151050B2 (en) | 2012-01-04 | 2015-10-06 | John Santeramo | Splice plate |
US20130327773A1 (en) * | 2012-06-06 | 2013-12-12 | David Jon Rosenkrantz | Internal Floating Roof for Covering Fluid Bodies in Storage Tanks |
US8813457B2 (en) * | 2012-06-29 | 2014-08-26 | Usg Interiors, Llc | Grid runner to perimeter trim clip |
US9482001B2 (en) | 2012-09-08 | 2016-11-01 | Worthington Armstrong Venture | Suspended ceiling grid adapter |
US9745747B2 (en) | 2012-09-08 | 2017-08-29 | Worthington Armstrong Venture | Suspended ceiling grid adapter |
US8839583B2 (en) | 2012-09-08 | 2014-09-23 | Worthington Armstrong Venture | Suspended ceiling grid adapter |
USD769706S1 (en) | 2013-05-28 | 2016-10-25 | Rockwool International A/S | Seismic separation clip for suspended ceiling grid systems |
US9869085B2 (en) | 2013-10-11 | 2018-01-16 | Shaun EVANS | Bracket assembly and method |
AU2014224082B2 (en) * | 2013-10-11 | 2018-07-19 | EVANS, Shaun MR | Bracket assembly and method |
WO2015053639A1 (en) * | 2013-10-11 | 2015-04-16 | Evans Shaun | Bracket assembly and method |
US20170362828A1 (en) * | 2016-06-20 | 2017-12-21 | Certainteed Ceilings Corporation | System and apparatus for a yoke structure in a ceiling suspension |
US10526784B2 (en) * | 2016-06-20 | 2020-01-07 | Certainteed Ceilings Corporation | System and apparatus for a yoke structure in a ceiling suspension |
US10036163B1 (en) * | 2017-07-31 | 2018-07-31 | Usg Interiors, Llc | Seismic perimeter attachment clip |
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